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Mirrors > Home > MPE Home > Th. List > Mathboxes > sbcel12gOLD | Structured version Visualization version Unicode version |
Description: Distribute proper substitution through a membership relation. (Contributed by NM, 10-Nov-2005.) (Proof shortened by Andrew Salmon, 29-Jun-2011.) Obsolete as of 18-Aug-2018. Use sbcel12 3983 instead. (New usage is discouraged.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
sbcel12gOLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfsbcq2 3438 | . . 3 | |
2 | dfsbcq2 3438 | . . . . 5 | |
3 | 2 | abbidv 2741 | . . . 4 |
4 | dfsbcq2 3438 | . . . . 5 | |
5 | 4 | abbidv 2741 | . . . 4 |
6 | 3, 5 | eleq12d 2695 | . . 3 |
7 | nfs1v 2437 | . . . . . 6 | |
8 | 7 | nfab 2769 | . . . . 5 |
9 | nfs1v 2437 | . . . . . 6 | |
10 | 9 | nfab 2769 | . . . . 5 |
11 | 8, 10 | nfel 2777 | . . . 4 |
12 | sbab 2750 | . . . . 5 | |
13 | sbab 2750 | . . . . 5 | |
14 | 12, 13 | eleq12d 2695 | . . . 4 |
15 | 11, 14 | sbie 2408 | . . 3 |
16 | 1, 6, 15 | vtoclbg 3267 | . 2 |
17 | df-csb 3534 | . . 3 | |
18 | df-csb 3534 | . . 3 | |
19 | 17, 18 | eleq12i 2694 | . 2 |
20 | 16, 19 | syl6bbr 278 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wceq 1483 wsb 1880 wcel 1990 cab 2608 wsbc 3435 csb 3533 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-v 3202 df-sbc 3436 df-csb 3534 |
This theorem is referenced by: sbcel2gOLD 38755 csbxpgVD 39130 csbrngVD 39132 |
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